Paper receptacle.



L. W. FARMER.

PAPER. REOEPTAGLB;

APPLIOATION FILED 001.9. 1912.

1,088,81 '3. Patented Ma; 3, 1914.

LUKE. WIABMEB, ,OF .SQMEnvILLEy nassacHUsET-Ts.

PAPER RECEPTACLE.

`Specification of Letters Patent.

Patented Mar. 3, 1914.

Awlicatianmed-ctober 9, 19.12. Barium@ 724,765.

To all whom t may concern Be it known that I, LUKE WV. FARMER, a citizen of the United States, residing at Somerville, in t-he county of Middlesex and State of Massachusetts, have invented an Improvement in Paper Receptacles, of which the following is a specification.

This invention relates to single service .paper receptacles such as may be used to contain milk and other liquids or semi-so1id substances. Containers of this nature are manufactured and shipped empty to the users, and it is necessary that they shall be made so that they may be nested together in order that they may be shipped economically. The containers when made frustoconical, may be nested together, but considerable difficulty arises in providing a cover for a frusto-conical, container which may be easily and quickly applied and which will form an air-tight connection with the container.

This invention has for its object the construction of a paper container of frustoconical form having an improved form of cover adapted to engage the upper end of the container, both outside and inside its wall, and form a double seal.

Figure 1 is a side elevation and partial transverse vertical section of a paper receptacle having a cover embodying this invention. Fig. 2 is a plan view of the container. Fig. 3 is an under side View of the COVGI.

10 represents the container which is of any well-known or suitable construction, al though frusto-conical in form. It is composed of any suitable thick, heavy paper, or paper-board. The cover of said container consists of a top-plate 12, having an integrally formed flange 13 at its perimeter which is designed to extend down over the outside of the upper end portion of the container, and said flange is of a diameter corresponding to the diameter of the upper end or edge of the container, so as to engage the outside of the wall of said container at its upper edge. Said flange is usually disposed at right angles to the topplate and hence will slidably engage the wall of the container as the cover is placed thereon, yet in case said flange should flare outwardly it will still engage the end of the wall of the container at a point adjacent the top-plate. Another flange 14 is arranged on the topplate within and concentric to the flange 13, there being a space 'between said flanges to receive the upper end portion of the container, and said flange 14 is made Imuch longer than` the flange 13, and .is designed to engage the inner sidevof the wall of the container at a point a short distance below its upper end, and said flange 14 ,isfdisposed at an angle with respect to -the Wall of said container for such engagement. The flange 14 is or may be arranged in parallel relation with the flange 13, being at right angles to the top-plate 12, and in such case its outer surface at its lower edge engages the inner side of the wall of the container when the cover is placed upon the container and pressed down far enough to enable the end or upper edge of the wall ofthe container to engage the under side of the top-plate. vSaid flange 14 is formed in dependently of the top-plate and has lips 15, extended inwardly from one of its edges v in a radial direction, which lips are disposed at right angles or thereabout with respect to the flange, and said lips 15 are secured to the under side of the top-plate 12 by glue or 'other adhesive substance, thereby attaching the flange 14 to the top-plate. Said flange, however, may be otherwise secured to the top-plate.

The cover and also the flange 14 are or may be made of thick heavy paper or paperboard, like the container, hence the flanges are slightly resilient, admitting of its being deflected slightly when engaging the wall of the container. The cover thus constructed is pressed down on top of the container until the end or upper edge of the wall of the container engages the top-plate 12, whereupon the inner flange 14 firmly engages the inne:- side of said wall, and during such downward movement the outer flange 13 slidably engages said wall, thus a double seal is produced. Said cover may be pressed down hard enough to cause a slight `deflection of the upper end portion of the wall of the container, and of the inner flange 14, in which case the effectiveness of the seals is increased.

Both the container and the flanged cover are coated with paraffin-wax by any well known or suitable process, so that the material composing both is rendered waterproof, and also a substantial film or coating is or may be formed thereon, as indicated in Fig. 1 of the drawing, and when the cover is pressed firmly into engagement with the upper end of the container, as above decrease the effectiveness of the seals.

I claimt- Thel combination With a paper receptacle having an inclined Wall, of a cover to removably cooperate with the free edge ofsaid Wall, said cover including a disk corresponding to the maximum diameter of the Wall and having spaced annular depending flanges to receive'the Wall between them, the outer flange having an inner diameter corresponding approximately to the maxi- --mum outer diameter of the mouth of the receptacle,the innervflange having an outer 15 diameter slightly less than the inner diameter of such mouth, whereby the inner surface of the outer flange engages the Wall on its outer surface, the innerv flange engaging the inner surface of said Wall at a point 2o remote from its upper edge.

Intestimony WhereoL-I have signed my vname to this specification in the presence of 

